BMW 3: Operating materials
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General information
Depending on the region, many gas stations sell
fuel that has been customized to winter or
summer conditions. Fuel that is available in winter,
for instance helps make a cold start
General information
The engine oil consumption is dependent on
your driving style and driving conditions.
Therefore, regularly check the engine oil level after
refueling by taking a detailed measurem
General information
Coolant consists of water and additives.
Not all commercially available additives are suitable
for the vehicle. Information about suitable additives
is available from a dealer's s
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The isolation monitoring determines whether the isolation resistance between
active high-voltage
components (e.g. high-voltage cables) and ground is above or below a required
minimum value. If
the isolation resistance falls below the minimum value, the danger exists that
the vehicle parts will be
High-voltage interlock loop
The SME control unit evaluates the signal of the high-voltage interlock loop
and checks whether there
is an open circuit with this circuit. In the event of an open circuit, the
battery management electronics
control unit can cause the high-voltage system to perform a qu